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HoJLR1206-1W-100mR-1%Shenzhen Milliohm Electronic Co.,Ltd
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Current measurement tool
Recently, I built a simple tool that makes it much easier to diagnose carrier boards for SoMs I’ve designed (I work with Nvidia, Variscite, and Toradex).
The principle is straightforward:
🔧 The tool plugs in instead of a mini automotive fuse (Keystone 3568).
🔧 It contains a shunt resistor for current sensing (20–100 mΩ, depending on the case).
🔧 Each side of the resistor is connected with coaxial cables directly to an oscilloscope.
The oscilloscope then calculates ΔU / R automatically, and I can instantly see the real-time current waveform.
Current measurement tool
Project images are for reference only. Actual production is based on the manufacturing files on the project page.
Please review the designer's notes (e.g., PCB thickness) and select the appropriate options.
PCBWay is not responsible
for issues caused by unsuitable parameter selections.
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